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Mechanochemical pretreatment of tin iodide perovskite precursors: effects of grinding temperature and time on solar cell performance
Tingting Liu, Sungwoon Cho, Ryosuke Nishikubo, Mikhail Pylnev, Fumitaka Ishiwari, Atsushi Wakamiya, Akinori Saeki
EES Solar 2025 Research paper (scientific journal)
Publisher: Royal Society of Chemistry (RSC)
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Trivalent Metal Chloride Doping for Interfacial Passivation and Enhanced Charge Transfer in Wide Bandgap Perovskite Solar Cells
Yieon Park, Ryosuke Nishikubo, Mikhail Pylnev, Ryoji Shimomura, Akinori Saeki
ACS Applied Energy Materials 2024/12/23 Research paper (scientific journal)
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Performance Boost by Dark Electro Treatment in MACl‐Added FAPbI3 Perovskite Solar Cells
Mikhail Pylnev, Ryosuke Nishikubo, Fumitaka Ishiwari, Atsushi Wakamiya, Akinori Saeki
Advanced Optical Materials 2024/09/27 Research paper (scientific journal)
Publisher: Wiley
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Evolving bifacial molecule strategy for surface passivation of lead halide perovskite solar cells
Nanaki Minoi, Fumitaka Ishiwari, Takuya Omine, Kazuharu Murotani, Ryosuke Nishikubo, Akinori Saeki
Sustainable Energy & Fuels 2024/08 Research paper (scientific journal)
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Sequential Deposition of Diluted Aqueous SnO2 Dispersion for Perovskite Solar Cells
Mikhail Pylnev, Ryosuke Nishikubo, Fumitaka Ishiwari, Atsushi Wakamiya, Akinori Saeki
Solar RRL 2024/07/12 Research paper (scientific journal)
Publisher: Wiley
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Combined Charge Extraction by Linearly Increasing Voltage and Time-Resolved Microwave Conductivity to Reveal the Dynamic Charge Carrier Mobilities in Thin-Film Organic Solar Cells
Shaoxian Li, Ryosuke Nishikubo, Akinori Saeki
ACS Omega 2024/06/25 Research paper (scientific journal)
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Wavelength‐Recognizable SbSI:Sb2S3 Photovoltaic Devices: Elucidation of the Mechanism and Modulation of their Characteristics
Tai Kobayashi, Ryosuke Nishikubo, Yizhou Chen, Kazuhiro Marumoto, Akinori Saeki
Advanced Functional Materials 2024/03 Research paper (scientific journal)
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Triammonium Molecular Tripods as Organic Building Blocks for Hybrid Perovskite Solar Cells
Tomoya Fukui, Kensuke Hofuku, Atsuko Kosaka, Nanaki Minoi, Ryosuke Nishikubo, Fumitaka Ishiwari, Hiroyasu Sato, Akinori Saeki, Takanori Fukushima
Small Structures 2024/03 Research paper (scientific journal)
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Zero‐Dimensional Tin Halide Perovskite with Long Charge Carrier Lifetime and Anisotropic Photoconductivity for Selective Deep‐UV Photodetection
Avija Ajayakumar, Chinnadurai Muthu, Manasa G. Basavarajappa, Amarjith V. Dev, Ryosuke Nishikubo, Sudip Chakraborty, Akinori Saeki, Letian Dou, Chakkooth Vijayakumar
Advanced Functional Materials 2024/02 Research paper (scientific journal)
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Exploration of Solution-Processed Bi/Sb Solar Cells by Automated Robotic Experiments Equipped with Microwave Conductivity
Chisato Nishikawa, Ryosuke Nishikubo, Fumitaka Ishiwari, Akinori Saeki
JACS Au 2023/11/27 Research paper (scientific journal)
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Bar Coating Process of Two-Dimensional Lead Iodide Perovskite Solar Cells: Effects of Vertical Orientation, Anisotropic Photoconductivity, and Conversion Time
Rei Shimono, Ryosuke Nishikubo, Mikhail Pylnev, Fumitaka Ishiwari, Atsushi Wakamiya, Akinori Saeki
ACS Applied Energy Materials 2023/09/25 Research paper (scientific journal)
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Perovskite Solar Cell Using Isonicotinic Acid as a Gap-Filling Self-Assembled Monolayer with High Photovoltaic Performance and Light Stability
Takeyuki Sekimoto, Teruaki Yamamoto, Fumito Takeno, Ryosuke Nishikubo, Maki Hiraoka, Ryusuke Uchida, Toru Nakamura, Kenji Kawano, Akinori Saeki, Yukihiro Kaneko, Taisuke Matsui
ACS Applied Materials & Interfaces 2023/07/19 Research paper (scientific journal)
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Compositional Dependence of Charge Carrier Dynamics in Multi-Cation/Halide Wide Bandgap Perovskites
Yieon Park, Ryosuke Nishikubo, Akinori Saeki
J. Photopolym. Sci. Technol. (Just accepted) 2023/06 Research paper (scientific journal)
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Precise Control of the Molecular Arrangement of Organic Semiconductors for High Charge Carrier Mobility
Ryota Akai, Kouki Oka, Shun Dekura, Kazuyoshi Yoshimi, Hatsumi Mori, Ryosuke Nishikubo, Akinori Saeki, Norimitsu Tohnai
The Journal of Physical Chemistry Letters p. 3461-3467 2023/04/03 Research paper (scientific journal)
Publisher: American Chemical Society (ACS)
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Unraveling complex performance-limiting factors of brominated ITIC derivative: PM6 organic solar cells by using time-resolved measurements
Shaoxian Li, Ryosuke Nishikubo, Tatsuho Wada, Tomokazu Umeyama, Hiroshi Imahori, Akinori Saeki
Polymer Journal 2023/04 Research paper (scientific journal)
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Surface Passivation of Lead Halide Perovskite Solar Cells by a Bifacial Donor−π–Donor Molecule
Nanaki Minoi, Fumitaka Ishiwari, Kazuharu Murotani, Ryosuke Nishikubo, Takanori Fukushima, Akinori Saeki
ACS Applied Materials & Interfaces 2023/02/08 Research paper (scientific journal)
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Elucidation of a Photothermal Energy Conversion Mechanism in Hydrogenated Molybdenum Suboxide: Interplay of Trapped Charges and Their Dielectric Interactions
Ryosuke Nishikubo, Yasutaka Kuwahara, Shintaro Naito, Kazuki Kusu, Akinori Saeki
The Journal of Physical Chemistry Letters Vol. 14 No. 6 p. 1528-1534 2023/02/06 Research paper (scientific journal)
Publisher: American Chemical Society (ACS)
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A chlorinated polythiophene-based polymer as a dopant-free hole transport material in perovskite solar cells
Kakaraparthi Kranthiraja, Ryosuke Nishikubo, Akinori Saeki
Energy Advances 2023 Research paper (scientific journal)
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Effects of Ammonium and Alkali Metal Additives on Anisotropic Photoconductivities and Solar Cell Efficiencies of Two-Dimensional Lead Halide Perovskites
Rei Shimono, Ryosuke Nishikubo, Fumitaka Ishiwari, Akinori Saeki
The Journal of Physical Chemistry C 2022/10/27 Research paper (scientific journal)
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Unprecedented Wavelength Dependence of an Antimony Chalcohalide Photovoltaic Device
Ryosuke Nishikubo, Shaoxian Li, Akinori Saeki
Advanced Functional Materials p. 2201577-2201577 2022/09 Research paper (scientific journal)
Publisher: Wiley
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Multivariate Analysis of Mixed Ternary and Quaternary A-Site Organic Cations in Tin Iodide Perovskite Solar Cells
Eita Nakanishi, Ryosuke Nishikubo, Fumitaka Ishiwari, Tomoya Nakamura, Atsushi Wakamiya, Akinori Saeki
ACS Materials Letters Vol. 4 No. 6 p. 1124-1131 2022/06/06 Research paper (scientific journal)
Publisher: American Chemical Society (ACS)
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Exploration of charge transport materials to improve the radiation tolerance of lead halide perovskite solar cells
Yoshiyuki Murakami, Ryosuke Nishikubo, Fumitaka Ishiwari, Kazumasa Okamoto, Takahiro Kozawa, Akinori Saeki
Materials Advances Vol. 3 No. 12 p. 4861-4869 2022/05 Research paper (scientific journal)
Publisher: Royal Society of Chemistry (RSC)
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Combinatorial Exploration of Monovalent Metals (M, M′) in Alkali, 11th-, and 13th-Group Elements toward (M/M′)–(Bi/Sb)–I Solar Cells
Chisato Nishikawa, Ryosuke Nishikubo, Fumitaka Ishiwari, Akinori Saeki
ACS Applied Energy Materials Vol. 5 No. 5 p. 6291-6301 2022/04 Research paper (scientific journal)
Publisher: American Chemical Society (ACS)
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Quantifying the optimal thickness in polymer:fullerene solar cells from the analysis of charge transport dynamics and photoabsorption
Shaoxian Li, Fumiya Hamada, Ryosuke Nishikubo, Akinori Saeki
Sustainable Energy & Fuels Vol. 6 No. 3 p. 756-765 2022/01 Research paper (scientific journal)
Publisher: Royal Society of Chemistry ({RSC})
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Machine‐Learning‐Assisted Selective Synthesis of a Semiconductive Silver Thiolate Coordination Polymer with Segregated Paths for Holes and Electrons
Takuma Wakiya, Yoshinobu Kamakura, Hiroki Shibahara, Kazuyoshi Ogasawara, Akinori Saeki, Ryosuke Nishikubo, Akihiro Inokuchi, Hirofumi Yoshikawa, Daisuke Tanaka
Angewandte Chemie Vol. 133 No. 43 p. 23405-23412 2021/10/18 Research paper (scientific journal)
Publisher: Wiley
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Frontispiece: Machine‐Learning‐Assisted Selective Synthesis of a Semiconductive Silver Thiolate Coordination Polymer with Segregated Paths for Holes and Electrons
Takuma Wakiya, Yoshinobu Kamakura, Hiroki Shibahara, Kazuyoshi Ogasawara, Akinori Saeki, Ryosuke Nishikubo, Akihiro Inokuchi, Hirofumi Yoshikawa, Daisuke Tanaka
Angewandte Chemie International Edition Vol. 60 No. 43 p. 23217-23224 2021/10/18 Research paper (scientific journal)
Publisher: Wiley
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Mixed lead–tin perovskite films with >7 μs charge carrier lifetimes realized by maltol post-treatment
Shuaifeng Hu, Minh Anh Truong, Kento Otsuka, Taketo Handa, Takumi Yamada, Ryosuke Nishikubo, Yasuko Iwasaki, Akinori Saeki, Richard Murdey, Yoshihiko Kanemitsu, Atsushi Wakamiya
Chemical Science Vol. 12 No. 40 p. 13513-13519 2021/09/27 Research paper (scientific journal)
Publisher: Royal Society of Chemistry ({RSC})
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Self-Assembled Organic Cations-Assisted Band-Edge Tailoring in Bismuth-Based Perovskites for Enhanced Visible Light Absorption and Photoconductivity
Johnpaul K. Pious, Manasa G. Basavarajappa, Chinnadurai Muthu, Ryosuke Nishikubo, Akinori Saeki, Sudip Chakraborty, Atsuro Takai, Masayuki Takeuchi, Chakkooth Vijayakumar
The Journal of Physical Chemistry Letters Vol. 12 No. 24 p. 5758-5764 2021/06/24 Research paper (scientific journal)
Publisher: American Chemical Society ({ACS})
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High Current Density Sn-Based Perovskite Solar Cells via Enhanced Electron Extraction in Nanoporous Electron Transport Layers
Yumi Miyamoto, Shohei Kusumoto, Tomoyasu Yokoyama, Yu Nishitani, Taisuke Matsui, Takashi Kouzaki, Ryosuke Nishikubo, Akinori Saeki, Yukihiro Kaneko
ACS Applied Nano Materials Vol. 3 No. 11 p. 11650-11657 2020/11/11 Research paper (scientific journal)
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Ag-(Bi, Sb, In, Ga)-I Solar Cells: Impacts of Elemental Composition and Additives on the Charge Carrier Dynamics and Crystal Structures
Iyoda, Fumiya, Nishikubo, Ryosuke, Wakamiya, Atsushi, Saeki, Akinori
ACS Applied Energy Materials Vol. 3 No. 9 p. 8224-8232 2020/08/17 Research paper (scientific journal)
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Optoelectronic and Energy Level Exploration of Bismuth and Antimony-Based Materials for Lead-Free Solar Cells
Ryosuke Nishikubo, Hiroyuki Kanda, Inés García-Benito, Agustín Molina-Ontoria, Gianluca Pozzi, Abdullah M. Asiri, Mohammad Khaja Nazeeruddin, Akinori Saeki
Chemistry of Materials Vol. 32 No. 15 p. 6416-6424 2020/07/31 Research paper (scientific journal)
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Anisotropic Photoconductivity and Long-Lived Charge Carriers in Bismuth-Based One-Dimensional Perovskite with Type-IIa Band Alignment
Johnpaul K. Pious, Manasa G. Basavarajappa, Chinnadurai Muthu, Nayana Krishna, Ryosuke Nishikubo, Akinori Saeki, Sudip Chakraborty, Vijayakumar C. Nair
The Journal of Physical Chemistry Letters Vol. 11 No. 16 p. 6757-6762 2020/07/30 Research paper (scientific journal)
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Coordination of NH2- or COOH-Appended Pt-Porphyrins with CsPbBr3 Perovskite Quantum Dots to Improve a Cascade Process of Two-Photon Absorption and Triplet–Triplet Annihilation
Wenting Gu, Ryosuke Nishikubo, Akinori Saeki
The Journal of Physical Chemistry C Vol. 124 No. 27 p. 14439-14445 2020/06/24 Research paper (scientific journal)
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How the Mixed Cations (Guanidium, Formamidinium, and Phenylethylamine) in Tin Iodide Perovskites Affect Their Charge Carrier Dynamics and Solar Cell Characteristics
Nakanishi, Eita, Nishikubo, Ryosuke, Wakamiya, Atsushi, Saeki, Akinori
Journal of Physical Chemistry Letters Vol. 11 No. 10 p. 4043-4051 2020/05/07 Research paper (scientific journal)
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Comparative Study of Charge Carrier Dynamics in Bismuth-based Dimer and Double Perovskites
Ryosuke Nishikubo
Journal of Photopolymer Science and Technology Vol. 32 No. 5 p. 735-740 2019/06 Research paper (scientific journal)
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Semiconducting carbon nanotubes as crystal growth templates and grain bridges in perovskite solar cells
Seo, Seungju, Jeon, Il, Xiang, Rong, Lee, Changsoo, Zhang, Hao, Tanaka, Takeshi, Lee, Jin-Wook, Suh, Donguk, Ogamoto, Tatsuro, Nishikubo, Ryosuke, Saeki, Akinori, Chiashi, Shohei, Shiomi, Junichiro, Kataura, Hiromichi, Lee, Hyuck Mo, Yang, Yang, Matsuo, Yutaka, Maruyama, Shigeo
Journal of Materials Chemistry A Vol. 7 No. 21 p. 12987-12992 2019/05/06 Research paper (scientific journal)
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Molecular Orientation Change in Naphthalene Diimide Thin Films Induced by Removal of Thermally Cleavable Substituents
Nakamura, Tomoya, Shioya, Nobutaka, Shimoaka, Takafumi, Nishikubo, Ryosuke, Hasegawa, Takeshi, Saeki, Akinori, Murata, Yasujiro, Murdey, Richard, Wakamiya, Atsushi
Chemistry of Materials Vol. 31 No. 5 p. 1729-1737 2019 Research paper (scientific journal)
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Lead-Free Solar Cells based on Tin Halide Perovskite Films with High Coverage and Improved Aggregation
Liu, Jiewei, Ozaki, Masashi, Yakumaru, Shinya, Handa, Taketo, Nishikubo, Ryosuke, Kanemitsu, Yoshihiko, Saeki, Akinori, Murata, Yasujiro, Murdey, Richard, Wakamiya, Atsushi
Angewandte Chemie International Edition Vol. 57 No. 40 p. 13221-13225 2018/10/01 Research paper (scientific journal)
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Solution-Processed Bi2S3 Photoresistor Film To Mitigate a Trade-off between Morphology and Electronic Properties
Ryosuke Nishikubo, Akinori Saeki
The Journal of Physical Chemistry Letters Vol. 9 No. 18 p. 5392-5399 2018/09/05 Research paper (scientific journal)
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Photon Upconversion through a Cascade Process of Two-Photon Absorption in CsPbBr3 and Triplet–Triplet Annihilation in Porphyrin/Diphenylanthracene
Shogo Izakura, Wenting Gu, Ryosuke Nishikubo, Akinori Saeki
The Journal of Physical Chemistry C Vol. 122 No. 26 p. 14425-14433 2018/06/22 Research paper (scientific journal)
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Anomalous Dielectric Behavior of a Pb/Sn Perovskite: Effect of Trapped Charges on Complex Photoconductivity
Kento Yamada, Ryosuke Nishikubo, Hikaru Oga, Yuhei Ogomi, Shuzi Hayase, Shohei Kanno, Yutaka Imamura, Masahiko Hada, Akinori Saeki
ACS Photonics Vol. 5 No. 8 p. 3189-3197 2018/06/05 Research paper (scientific journal)
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Lithium-Ion Endohedral Fullerene (Li+@C-60) Dopants in Stable Perovskite Solar Cells Induce Instant Doping and Anti-Oxidation
Jeon, Il, Ueno, Hiroshi, Seo, Seungju, Aitola, Kerttu, Nishikubo, Ryosuke, Saeki, Akinori, Okada, Hiroshi, Boschloo, Gerrit, Maruyama, Shigeo, Matsuo, Yutaka
Angewandte Chemie International Edition Vol. 57 No. 17 p. 4607-4611 2018/04/16 Research paper (scientific journal)
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Lithium-Ion Endohedral Fullerene (Li+ @C60 ) Dopants in Stable Perovskite Solar Cells Induce Instant Doping and Anti-Oxidation
Il Jeon, Hiroshi Ueno, Seungju Seo, Kerttu Aitola, Ryosuke Nishikubo, Akinori Saeki, Hiroshi Okada, Gerrit Boschloo, Shigeo Maruyama, Yutaka Matsuo
Angewandte Chemie Vol. 130 No. 17 2018/04
Publisher: Wiley
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Highly efficient air-stable/hysteresis-free flexible inverted-type planar perovskite and organic solar cells employing a small molecular organic hole transporting material
Saripally Sudhaker Reddy, Sungmin Shin, Um Kanta Aryal, Ryosuke Nishikubo, Akinori Saeki, Myungkwan Song, Sung-Ho Jin
Nano Energy Vol. 41 p. 10-17 2017/11 Research paper (scientific journal)
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Solvent-Coordinated Tin Halide Complexes as Purified Precursors for Tin-Based Perovskites
Ozaki, Masashi, Katsuki, Yukie, Liu, Jiewei, Handa, Taketo, Nishikubo, Ryosuke, Yakumaru, Shinya, Hashikawa, Yoshifiimi, Murata, Yasujiro, Saito, Takashi, Shimakawa, Yuichi, Kanemitsu, Yoshihiko, Saeki, Akinori, Wakamiya, Atsushi
ACS Omega Vol. 2 No. 10 p. 7016-7021 2017/10/20 Research paper (scientific journal)
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Accomplishment of Multifunctional π-Conjugated Polymers by Regulating the Degree of Side-Chain Fluorination for Efficient Dopant-Free Ambient-Stable Perovskite Solar Cells and Organic Solar Cells
Kakaraparthi Kranthiraja, Sang Ho Park, Hyunji Kim, Kumarasamy Gunasekar, Gibok Han, Bumjoon J. Kim, Chang Su Kim, Soohyun Kim, Hyunjung Lee, Ryosuke Nishikubo, Akinori Saeki, Sung-Ho Jin, Myungkwan Song
ACS Applied Materials & Interfaces Vol. 9 No. 41 p. 36053-36060 2017/10/04 Research paper (scientific journal)
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Minute-Scale Degradation and Shift of Valence-Band Maxima of (CH3NH3)SnI3 and HC(NH2)2SnI3 Perovskites upon Air Exposure
Ryosuke Nishikubo, Naoki Ishida, Yukie Katsuki, Atsushi Wakamiya, Akinori Saeki
The Journal of Physical Chemistry C Vol. 121 No. 36 p. 19650-19656 2017/09/06 Research paper (scientific journal)
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Thermoresponsive Emission Switching via Lower Critical Solution Temperature Behavior of Organic-Inorganic Perovskite Nanoparticles
Nishikubo, Ryosuke, Tohnai, Norimitsu, Hisaki, Ichiro, Saeki, Akinori
Advanced Materials Vol. 29 No. 23 p. 1700047-1700047 2017/04/13 Research paper (scientific journal)
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High-Performance Long-Term-Stable Dopant-Free Perovskite Solar Cells and Additive-Free Organic Solar Cells by Employing Newly Designed Multirole π-Conjugated Polymers
Kakaraparthi Kranthiraja, Kumarasamy Gunasekar, Hyunji Kim, An-Na Cho, Nam-Gyu Park, Seonha Kim, Bumjoon J. Kim, Ryosuke Nishikubo, Akinori Saeki, Myungkwan Song, Sung-Ho Jin
Advanced Materials Vol. 29 No. 23 p. 1700183-1700183 2017/04/10 Research paper (scientific journal)